1 Heavy Anti-Aircraft Regiment RA was re-designated as 1 Anti-Aircraft Regiment RA from 1 Anti-Aircraft Brigade RA in May 1938. It was re-designated as Heavy Anti-Aircraft in June 1940. The Regiment served with the BEF in 1939 and after Dunkirk was established in the North West of England. It moved to Sicily in July 1943 and then on to Italy.. In April 1947 1 Heavy Anti-Aircraft Regiment RA became 76 Heavy Anti-Aircraft Regiment RA.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| May 38 | Home Forces | UK | |
| Nov 39 | GHQ BEF, 1 Anti-Aircraft Brigade | Arras, France | |
| May 40 |  |
11 Anti-Aircraft Division, 1 Anti-Aircraft Brigade | Crewe, Cheshire, UK |
| May 43 |  |
1 Canadian Division | Arbroath, Angus, UK |
| Jul 43 |  |
8 Army | Pachino, Sicily |
| Jul 43 | |
8 Army, 2 Anti-Aircraft Brigade | RHQ – Augusta 17 Bty – Lentini Airfield 1 & 2 Btys – Syracuse |
| Aug 43 | |
8 Army, 62 Anti-Aircraft Brigade | Catania, Sicily |
| Oct 42 |  |
AFHQ, 73 Anti-Aircraft Brigade | Catania, Sicily |
| Aug 44 | |
8 Army, 2 Anti-Aircraft Brigade | Gothic Line, Italy |
| Sep 44 | |
Diluted by African Pioneer Corps men | |
| Mar 45 | |
8 Army | Senio River, Italy |
Batteries
| Sep 39 | 1, 2, 17 & 4 LAA |
| Feb 40 | 15, 16, 17 |
| Jun 40 | 1, 2, 17 |
Equipment
| Sep 39 | 16 x 3 inch 20 cwt Guns, 8 x 3.7 inch Guns |
| May 43 | 3.7 inch Guns |
| Jul 43 | A Troop 2 Bty 6 x Italian 75mm LAA Guns to replace 3.7’s lost at sea |
| Aug 43 | A Troop receive replacement 3.7 inch Guns |